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Ethanol Content = 0%

Posted: Sat Nov 23, 2019 10:14 am
by spAdam
Hello,

Just got my car running with a new engine harness and flex fuel sensor. I'm surprised to see the ethanol content reading 0%, especially with fuel from a regular gas station here in southern California. Temperature is working, so I know the sensor is alive. I've attached a short log and a cal to look over, can you just make sure everything looks correct? I'd like to confirm function before adding E85 to the equation :)

Resistor is wired in near sensor end of loom like so, and booted with Raychem SCL:

Image

Re: Ethanol Content = 0%

Posted: Sat Nov 23, 2019 3:22 pm
by crluver123
the photo isn't showing up

Re: Ethanol Content = 0%

Posted: Sat Nov 23, 2019 6:34 pm
by Hondata
The fuel temperature matches the ambient temperature so I think it is working, but you should see 8-9% ethanol in pump gas. Let me double check this software version before you do any trouble shooting.

Re: Ethanol Content = 0%

Posted: Sun Nov 24, 2019 1:30 pm
by spAdam
Thanks Hondata! Wasn't even expecting a reply ion a Saturday.
crluver123 wrote: Sat Nov 23, 2019 3:22 pm the photo isn't showing up
Yeah I noticed that. Still getting used to the fact that Google Photos doesn't work the same as photobucket used to back in the day. Added to this post as an attachment.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 6:10 am
by DaX
Don't know if it's on my end or your end, but the log and/or calibration you attached is corrupt or wacky when I try to open it.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 10:22 am
by spAdam
I recorded it using the beta software version. i just tried to open it on the current version and it also looked wacky there.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 11:47 am
by Spunkster
You have the Analog 0 setup as an ethanol input with a custom conversion set to AF ratio with no voltages specified. Change analog 0 to unused instead. Make a new datalog with that calibration and see if it reads correctly then.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 4:12 pm
by spAdam
Spunkster wrote: Mon Nov 25, 2019 11:47 am You have the Analog 0 setup as an ethanol input with a custom conversion set to AF ratio with no voltages specified. Change analog 0 to unused instead. Make a new datalog with that calibration and see if it reads correctly then.
Good catch. I must have fat fingered that as I've never used a lambda sensor on that input. Here's another, still having the issue. Fuel temp is working as expected, I watched it warm up while I was idling the car trying to see if I could get it to work. Attached a log of a quick beer run and a new cal.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 5:02 pm
by Spunkster
From Help, About, what is the version of software that you are using?

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 5:29 pm
by spAdam
2.7.3.0. I tried backdating to see if that fixed the issue and forgot to re-update. I have been running on 2.7.5. That's my bad, I should have communicated that.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 5:41 pm
by Spunkster
Only use 2.7.5 once you have updated. I have verified that this is working correctly using 2.7.5.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 6:23 pm
by spAdam
Copy. Will do and will get back to you.

Re: Ethanol Content = 0%

Posted: Mon Nov 25, 2019 8:11 pm
by spAdam
Okay, so I reinstalled 2.7.5, confirmed settings and re-ran. Same result. Starting to lean toward a bad sensor as I’m confident in the wiring. Also since it’s giving good temp numbers I know it’s alive. Just seems strange that it could do one without the other.

Re: Ethanol Content = 0%

Posted: Tue Nov 26, 2019 9:56 am
by Spunkster
Do you have any friends that have a flex fuel sensor you could borrow or try your sensor on their car?

Re: Ethanol Content = 0%

Posted: Tue Nov 26, 2019 10:25 am
by spAdam
Yes but unfortunately he is out of town for the holiday. For $36 I went ahead and picked up a fresh one. We’ll see what we find tomorrow.